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Hi welcome to unit 10 so unit 10 is all about Javascript functions.

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Another one those really important components that we're going to use for the rest of the course.

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And not only is it one of the most important.

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I'd argue it's the most important part of Javascript.

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So pretty much anyone who's ever worked with javascript anyone who has any experience with it would

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tell you that the one thing that you have to know in order to understand and to work with javascript

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well is functions.

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Functions are the building blocks of everything and javascript or almost everything.

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So this unit focuses solely on functions.

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But we're going to get a lot of practice in every exercise every assignment we do from here on out when

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we get to know JSM we get J Query.

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It's all based around functions.

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So lots and lots of practice coming up later in this lesson.

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And later in the course.

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So we have three main objectives in this unit.

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First is for you to write function declarations and function expressions and don't worry I'll explain

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in quite a bit of detail what those are and how they're similar and how they're different.

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So two ways of writing functions I want you you'd be able to write both of them the next objective is

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a little bit more bite size.

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I'd like for you to be able to explain the difference between conses not logging something and returning

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something.

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So return is a special word it is a key word in javascript that does something special that you'll see

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in the next unit.

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So the last objective is that I'd like you to be able to define your own functions whether there are

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function declarations or function expressions own defined functions that can take multiple arguments

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and then will wrap up this unit with some more advanced discussions about two topics which are scope

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and higher order functions.

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So I don't have the objectives for those because they're not technically core to everything we're talking

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about they're not central concepts that you absolutely have to understand.

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Really I'm trying to make those make the objectives of the foundational the fundamental things that

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you have to know before you leave this course.

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But scope and higher order functions are two topics that are important.

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They're intrinsic to J.S..

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I mean talk about them at length in the last two videos in this unit.

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So look forward to that or don't skip them if you want.

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OK I'll see in the next.